What’s the difference between EZCast dongles?

Basically VMD-EZ151,VMD-EZ152, VMD-EZ153 are first generaton EZCast dongles with separated WiFi module.VMD-EZ151 is the world 1st EZCast dongle;VMD-EZ152 was the most popular EZCast dongle, known as M2, and there're many copy dongles in market;VMD-EZ153 is an OEM item for a China brand